flashlights that have a single, high output.
... and I'm out. I'd want to be able to trade run-time against brightness. Also, I think 100L is pretty bright for most of my EDC uses. Indoors, 7L is usually more than adequate, and outdoors around 30L.
The EDC Light, which I now know shall be smaller than I originally thought, shall be no longer than 5", with a body no bigger than .75" in diameter or cross-section. A flashlight of this size will easily accommodate 123A as well as AA size batteries. 200L seems like a reasonable output for a light of this size.
I think you're being unambitious here. I have a Zebralight SC600 Mk II L2 that is 4" by 1" and produces 1,100L. OK it's a bit wider, but also a bit shorter. Generally I think brightness should go by multiples of three: 0.3L, 1L, 3L, 10L, 30L, 100L, 300L, 1000L. To the human eye, 200L EDC isn't that much brighter than 100L keychain.
Over-all it sounds like you are very keen on tactical or combat-oriented lights. That's not for me.